Apparatus for the manufacture of moisture-proof cartons.



PATENTED MAR. 6, 1906.

H. G. ECKSTEIN. APPARATUS FOR THE MANUFACTURE OF MOISTURE PROOF UARTONS.

APPLICATION FILED JUNE 25, 1904.

3 SHEETS-SHEET 1.

PATENTED MAR. 6, 1906.

H. G. EGKSTEIN. APPARATUS FOR THE MANUFACTURE OF MOISTURE PROOF CARTONS.

APPLICATION FILED JUNE 25. 1904.

3 SHEETS-SHEET 2.

No. 814,122. PATENTED MAR. 6, 1906.' i H. G. EOKSTEIN.

APPARATUS FOR THE MANUFACTURE OF MOISTURE PROOF GARTONS. APPLICATIONFILED JUNE 25, 1904.

s SHEETS-SHEET a.

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HENRY G. EUKSTEIN, OF CHICAGO, ILLINOIS. APPARATUS FOR THE MANUFACTUREOF MOISTURE-PROOF CARTONS.

Specification of Letters Patent.

Patented March 6, 1906.

To all whom it may concern.-

Be it known that I, HENRY G. ECKSTEIN, a citizen of the United States,residing in Chicago, county of Cook, and State of Illinois, haveinvented certain new and useful Improvements in A paratus for theManufacture of Moistureroof Cartons, of which I do declare the followingto be a full, clear, and exact description, reference being had to theaccompanying drawings, forming part of this specification.

The present invention has for its object to provide an improvedapparatus whereby paper cartons, such as are commonly used for inclosingcandied popcorn or like confections or other small articles liable to beinjuriously affected by atmospheric moisture, may be renderedpractically moisture-proof.

The invention consists in the features of novelty hereinafter described,illustrated in the accompanying drawings, and articularly defined in theclaims at the en of this specification.

Figure 1 is a view in vertical longitudinal section through a form ofapparatus embodying my invention. Fig. 2 is a plan view, upon anenlarged scale, of the cage or basket for containing the cartons to betreated. Fig. 3 is aview in vertical section on line 3 3 of-Fig. 2. Fig.4 is a view in vertical cross-section on line 4 4 of Fig. 2. Fig. 5 is aplan view of a blank from which a carton may be formed. Fig. 6 is aperspective view of a carton ad apted'to be treated in keeping with myinvention.

The cage or basket for containing the cartons to be treated consists ofa rectangular metal frame the base-bars A of which are connected to thetop bars B by means of upright bars C. The upright bars C are extendedto a point above the cage, as clearly shown in Figs. 1 and 3 of thedrawings, and

have their ends turned inwardly to form thehandles 0, whereby the cageor basket may be conveniently lifted. From end to end of the base-bars Aextend the longitudinal bars D, that are securely riveted, as at d, tothe bars A. To these longitudinal bars D are secured the uprightcarton-holders E, that preferably consist of U-shaped bars havingopenings 6 therein, these carton-holders being set at such distancesapart as to prevent the cartons when in position upon their holders fromcontacting one with another;

The form of carton for the treatment of which the invention is moreespecially adapted is illustrated in Figs. 5 and 6 of the draw: ings.This carton W, which is preferably formed from a sheet of Manila paperof good quality, is severed or out along the line w to form the terminalflaps w and is scored along the lines to to determine the points atwhich the blank is to be folded. When the blank is folded, as shown inFig. 6 of the drawings, the overlap ing edges w are sealed by a suitableglue, w ich readily adheres to the surface of the edges, and thiscutting of the terminal flaps, the scoring and folding of the blank, andthe sealing of the overlapping edges will be effected before the blankis subjected to the treatment in my improved apparatus. It will beunderstood by those familiar with this class of cartons that theterminal flaps are designed to be folded one upon the other when thecarton is'to be closed; but in the practice of my invention therendering of the carton moisture-proof is effected after it has beenfolded to the shape shown in Fig. 6 and after its overlapping ed es havebeen sealed, but while its terminal aps are still in extended position.Open-ended cartons, such as shown in Fig. 6 of the drawings, will be setover the carton-holders E of the cage or basket, and after the cartonsare in place a retaining frame or grid will be placed over the top ofthe basket to prevent the accidental slipping of the cartons from theirholders when the basket is to be reversed, as will hereinafter appear.Preferably the retaming-frame consists of an outer bar G, from end toend of which extend a series of rods or wires 9, corresponding in numberand arrangement with the several rows of cartonholders. The retainingframe or grid is provided at its ends with handles g, whereby it may beconveniently lifted, and in order to hold the retaining-frame inposition when the cage or basket isreversed suitable detachablefastening devices will be provided for securing the retaining frame orgrid to the top of the cage or basket. As shown, these retaining devicesconsist of spring-clips H, the lower ends of which are secured to thetop bar B of the cage or basket, while their upper bent ends are adaptedto spring over and retain the end bars of the retaining frame or grid.(See Fig. 3.)

After the cartons have been placed in position upon the carton-holdersand the retaining frame or grid has been set in place, as shown in Fig.3, the cage or basket will be lowered into a bath or vessel K of meltedparmaintained at the desired temperature '(sa about 23 0 Fahrenheit) bymeans of suitab e steamipes M. The cartons thus immersed in t e bathwill be allowed to remain there (say from three to ten minutes) untilthey become thoroughly impregnated with the paraffin, after which thecage or basket will be lifted by the handles 0 and will be set upon atable 0, the bottom of which inclines downwardly toward the bath orvessel K. The cage or basket will be allowed to remain upon the table 0(say from three to ten minutes) while the excess wax drains from theopen-ended cartons, after which the basket will be inverted and placedin a suitable box or casing P, the sides of which are provided withsuitable rails or supports 1), whereon the handles (2 of the cage orbasket will rest. The purpose in thus inverting the cartons while theparaflin-wax is in a fluid condition is to permit the flow of the waxtoward the inverted ends of the cartons, and thus insure a more uniformdistribution of the wax from end to end of the cartons. While thecartons are thus held in inverted position, they are subjected to acooling operation for the purpose of uickly setting the wax, causing itto form a film over the entire inner and outer surfaces of each carton.The apparatus whereby a blast of cool air is directed through thecartons comprises a pipe R, that opens into the bottom of the box orcasing P, this pipe R leading from a blower S, the induction-pipe s ofthe blower being preferably connected to a cooling-chamber T of anysuitable character adapted to reduce the temperature of the air belowthat of the surrounding atmosphere. The cartons will be allowed toremain within the box P until the paraffin has set or hardened upontheir surfaces. after which the attendant will re move the retainingframe or grid from the top of the cage or basket and will thereafterdump the cartons onto a table V. extending above the blower S.

By my improved apparatus the cartons after they have been scored andfolded and after their overlapping edges have been sealed are heldseparate one from another during the treatment. so that not only is thebody of the paper rendered moisture-proof at all points, but the scoredupper corners of the afiin that may be low the terminal flaps to besubsequently folded without destroying the moisture-proof character ofthe carton at such points.

It is manifest that the details of the present invention may be modifiedwithout dearting therefrom and that features of the invention may beemployed Without its adoption as an entirety.

I do not Wish to be understood as claiming herein the method of treatingcartons to render them waterproof incident to the operation of theabove-described a paratus, as such invention is set forth and c aimed inan ap lieation filed by me August 22, 1903, Seme No. 170,418.

Having thus described my invention, what I claim as new, and desire tosecure by-lletters Patent, is-

1. An apparatus for forming moistureproof cartons comprising a bath forcontainlng the paraffin or like material wherein the cartons will beimmersed, a-cage for holding said cartons, a support for said cage andmeans for directing a blast of air through said cage and through thecartons contained therein.

2. An apparatus for the manufacture of moistureroof cartons comprising abath for the parafin or like material into which the cartons will bedipped, a cage for holding said cartons, a draining-table adjacent saidbath for sustaining said cage with the cartons therein, a supportprovided with means for holding said cage in reverted position and anair-blast pipe extending beneath said support and adapted to direct ablast of air through said support and the cartons contained therein.

3. An apparatus for forming moistureproof cartons com rising a bath forthe paraffin or like material into which the cartons will be dipped,said bath being provided with means for heating the paraffin, a cage forholding the cartons, a draining-table for sustaining said cage after ithas been lifted from the bath, a support for holding said cage and anair-blast pipe leading to a point beneath the cage when u on saidsupport and adapted to deliver a b fast of air through said cage and thecartons contained therein.

4. An apparatus for forming moistureproof cartons comprising a cagehaving an open-work bottom and top and provided upon its interior with aplurality of individual supports for holding the cartons separatedwithin the cage.

An apparatus for forming moisture- .i

proof cartons comprising a cage having an openwork bottom and top androvided upon its interior with means for ho ding the carton are coatedwith films of wax which alr rage being provided with offsets adapted tocartons in separate position, the top of said hold the top of the cageabove a support when the cage has been reversed.

HENRY G. ECKSTEIN.

Witnesses:

ALBERTA ADAMICK, GEO. P. FISHER, Jr.

